Ptpe-joint



(N0 ModeL) H. MQKENNA & G. D. BULMER.

PIPE JOINT.

N0. 319,289. Patented June 2, 1885.

Inventors.

ses.

N. PETERS, Phololithographur. WnhTnglun. D,C.

UNITE HUGH MOKENNA AND GEORGE D. BULMER, OF PENN, ALLEGHENY COUNTY,ASSIGNOBS TO BOOTH & FLINN, OF PITTSBURG, PENNSYLVANIA.

PIPE-JOINT.

SPECIFICATION forming part of Letters Patent No. 319,289, dated June 2,1885.

7 Application filed April 27,1885. (No model.)

To aZZ whom it may concern:

Be it known that we, HUGH MOKENNA and GEORGE D. BULMER, of Penntownship, in the county of Allegheny and State of Pennsylvania, haveinvented a new and useful Improvement in Devices for Making the Jointsof Natural-Gas Pipes; and we do hereby declare the following to be afull, clear, and exact description thereof, reference being had to theaccompanying drawings, in which- Figure 1 is a perspective view of ajoint illustrating the use of our improvement. Fig. 2 is a longitudinalsection of the same. Figs. 3 and 4 are side and edge views of theelastic ring.

Like letters of reference indicatclike parts.

In forming the joints of naturalgas conductors in whichtongue-and-socket pipe-seetions are used it has been customary to makethe tongue end of a pipesection with an external bead and the bowl endwith a large socket so as to receive the bead and form an annular recessaround the inserted tongue end of the next section. In natural-gasconductors it is desirable that the joints be closed by a packing oflead poured into the annular recess. In order'to accomplish thispouring, the tongue end of the pipe-section is first entered into thebowl end of the next section and a ring of clay or other material isplaced around the inserted pipe at the end of the receiving-pipe, with alateral pouring-hole on the upper side. This ring forms the fourth sideof the annular recess,and retains the lead in position at the end of thereceivingpipe until it becomes set in the joint. Among other devicesused for this purpose has been a flexible ring of steel, having an innerfacing of packing material, which embraced the illserted pipe and wasdrawn tightly around the same by means of a clamping-screw attached byhooks or other devices to its ends. The objection to this device wasthat it was liable to become misshapen and not fit perfectly in themouthof the bowl, and the clampingserew arrangement was unhandy andtroublesome. By our invention these difficulties are all obviated, andthe cost of the appliance is Very much reduced.

In the drawings, it represents the receivingpipe, and b the insertedpipe. 0 is the bead on the end of theinserted pipe; d, the bowl of thereceiving-pipe, and e the annular recess formed by the bowl around theend of the inserted pipe.

We make a thick annulus of india-rubber, f, cut at one side, as at f,and to the ends thus formed we attach, by rivets or otherwise, hooks g.This annulus is placed around the inserted pipe I), against the end ofthe bowl (2, so as to form a fourth side of the recess 0. The two endsare brought near together, the annulus being tightly stretched on thepipe I) by, means of a pair of tongs, h, provided with securing-bar h.

The openingf formsapouring-gate,through which the molten lead can bepoured into the annular recess 6, the outer side of the pouring-gatebeing formed by a lump or wad of clay, i.

The annulusf, being composed entirely of one integral body of veryelastic material,

conforms itself exactly to the surface of the pipe 1), making aperfectly-tight joint, and not exposed to distortion, as in the case ofthe steel ring before mentioned.

The device is cheap and simple. The tongs h are also cheap inconstruction, easily used, and not in the way.

The whole apparatus facilitates the laying of the pipe and effects asaving of time.

\Vhat we claim as our invention, and desire to secure by Letters Patent,is

1. The combination of the pipe a 1), rubber ring f, provided with hooksg, and the tongs h, substantially as and for the purposes de scribed.

2. A device for closing the bowl end of pipes, for the purposespecified, consisting of the rubber ring f, provided with hooks g, incombination with the tongs h, substantially as and for the purposesdescribed.

In testimony whereof we have hereunto set our hands this 11th day ofApril, A. D. 1885.

HUGH MOKENNA. GEORGE D. BULMER.

Witnesses:

J. K. SMITH, WV. B. OORWIN.

